LR18120HL-15-SH2-R [UTC]
Fixed Positive LDO Regulator, 1.5V, 0.32V Dropout, CMOS, PDSO8, LEAD FREE, HSOP-8;
| 型号： | LR18120HL-15-SH2-R |
| 厂家： | 
Unisonic Technologies |
| 描述： | Fixed Positive LDO Regulator, 1.5V, 0.32V Dropout, CMOS, PDSO8, LEAD FREE, HSOP-8 光电二极管 输出元件 调节器 |
| 文件： | 总8页 (文件大小：375K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
LR18120
CMOS IC
2A LOW DROPOUT REGULATOR
WITH ENABLE
DESCRIPTION
The UTC LR18120 is a positive voltage regulator with high
performance. It has low dropout voltage and low input voltage,
besides its output voltage can be fixed at 1.0V, 1.2V, 1.5V, 1.8V, or
2.5V depending on internal feedback resistors or ADJ (not connected
to the ground) with external feedback resistors. The input voltage of
UTC LR18120 can be low to 1.4V. There are two additional pin in the
LR18120. One is EN pin and the other is POK pin.
The UTC LR18120 is specially made for applications with low
input voltage, low dropout voltage, and low output voltage which is
almost the same as the input voltage. Typical applications include
motherboards, notebooks, set top boxes, network cards and
peripheral cards.
FEATURES
* VIN as Low as 1.4V and VPP Voltage 5V
* VD=320mV @ IOUT=2A, VOUT=1.2V
* Internal Over Current and Over Temperature Protection
* With Enable Pin
* Output Voltage: ±2%
* 1.0V, 1.2V, 1.5V, 1.8V and 2.5V Output Voltage
Adjustable Externally Using Resistors
* When Disable VOUT Pull Low Resistance
ORDERING INFORMATION
Ordering Number
Package
Packing
Lead Free
Halogen Free
LR18120xL-xx-S08-R
LR18120xL-xx-SH2-R
LR18120xG-xx-S08-R
LR18120xG-xx-SH2-R
SOP-8
Tape Reel
Tape Reel
HSOP-8
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LR18120
CMOS IC
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
MARKING
10: 1.0V
12:1.2V
15:1.5V
18:1.8V
25:2.5V
SOP-8
HSOP-8
PIN CONFIGURATION
PIN DESCRIPTION
PIN NO.
PIN NAME
POK
DESCRIPTION
This pin will Indicate high under this situation: VO reaches 92% of its rating voltage.
Open-drain output.
1
The enable control Input pin. As while as this pin’s voltage falls below 0.4V ,the
LR18120 will stop working. When there’s nothing connected with this pin, for active
High version, the device will be enabled, for active Low version，the device will be
shutdowned
2
VEN
The pin of input voltage.
3
VIN
Placing large capacitance closely to this pin is necessary. There should be
connected a 10µF ceramic capacitor.
4
5
6
VPP
NC
This pin is for input voltage to control circuit.
Connected nothing.
VOUT
The voltage output pin.
When this pin connected to the ground,VOUT will be set by the internal feedback
7
8
ADJ
resistors. Otherwise, if using external feedback resistors to decide the VOUT, VOUT =
0.8(R1+R2)/R2 Volts.
Ground.
GND
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LR18120
CMOS IC
BLOCK DIAGRAM
Enable Threshold Level High:
Enable Threshold Level Low:
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LR18120
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
VPP, VIN
PD
RATINGS
7
UNIT
V
Input Voltage
Power Dissipation
Internally limited
150
Junction Temperature
TJ
°C
°C
°C
Ambient Operation Temperature
Storage Temperature
TOPR
-40~ +85
-65~ +150
TSTG
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
VIN
RATINGS
1.4 ~5.5
UNIT
V
VIN Voltage
VPP Voltage
VPP
4.5~5.5
V
Ambient Operation Temperature
TOPR
-40°C ≤TOPR ≤ +85°C
°C
THERMAL DATA
PARAMETER
SYMBOL
RATINGS
150
UNIT
°C/W
°C/W
°C/W
°C/W
SOP-8
Junction to Ambient
Junction to Case
θJA
HSOP-8
SOP-8
143
20
θJC
HSOP-8
14
ELECTRICAL CHARACTERISTICS
VPP=5V, VIN =3.3V, VEN=VPP, IOUT =10mA, CIN=10µF, COUT =10µF, TA=TJ=25°C, unless otherwise specified.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
VIN
Input Voltage Range
Quiescent Current (Ground Current)
VPP
VIN
IQ
1.4
4.5
5.5
2
V
VOUT=2.5V
1
mA
VPP Voltage Range
VPP
IPPH
IPPL
5.5
0.5
60
V
VOUT =2.5V
VEN=0V
0.23
36
mA
μA
VPP Current
VOUT
Output Voltage (Internal Fixed Voltage)
VOUT
VIN= VOUT +0.5V, VOUT =2.5V
VIN=( VOUT +0.5V) ~ 5V
2.45
2.5
0.2
2.55
1
V
∆V
OUT
Line Regulation
%
∆V × V
IN OUT
Load Regulation
∆VOUT
10mA≤IOUT≤2A
0.2
300
1.4
90
1
%
mV
A
Dropout Voltage
VD
IOUT=2A
420
Short Circuit Current
VOUT Pull Low Resistance
ADJ
VEN=0V
Ω
Reference Voltage
Adjust Pin Current
Adjust Pin Threshold
VEN
VREF
IADJ
VADJ= VOUT
0.788 0.8 0.812
V
nA
V
20
100
0.15
1.6
0.2
0.25
VEN Pin Voltage High
VEN Pin Voltage Low
VEN Pin Bias Current
POK
VH(EN)
VL(EN)
V
V
0.4
40
IBIAS(EN) VEN=0V
12
μA
VOUT Power OK Voltage
Hysteresis
VTHPOK
VHYPOK
92
7
%
%
OVER TEMPERATURE PROTECTION
Over Temperature
Over Temperature Hysteresis
TOT
150
30
°C
°C
TOTHY
Note: Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
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LR18120
CMOS IC
TYPICAL APPLICATION CIRCUIT
0.8(R1+R2)
R2
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LR18120
CMOS IC
TYPICAL CHARACTERISTICS (VCC= 3.3V, TA=25°C, unless otherwise specified.)
Quiescent Current vs. Input Voltage
Quiescent Current vs. Temperature
1
1
0.9
0.9
0.8
0.7
0.8
0.7
0.6
0.5
0.4
0.6
0.5
0.4
0.3
0.2
0.1
0
0.3
0.2
0.1
0
3
3.5
4
4.5
5
5.5
-45-35-25-15 -5 5 15 25 35 45 55 65 75 85
Temperature (°C)
Input Voltage, VIN (v)
IPPH Current vs. Input Voltage
IPPH Current vs. Temperature
0.5
0.5
0.45
0.4
0.45
0.4
0.35
0.3
0.35
0.3
0.25
0.2
0.25
0.2
0.15
0.1
0.15
0.1
0.05
0
0.05
0
3
3.5
4
4.5
5
5.5
-45-35-25-15 -5 5 15 25 35 45 55 65 75 85
Temperature (°C)
Input Voltage, VIN (v)
IPPL Current vs. Temperature
IPPL Current vs. Input Voltage
40
35
40
35
30
25
20
15
10
30
25
20
15
10
5
0
5
0
-45-35-25-15 -5 5 15 25 35 45 55 65 75 85
3
3.5
4
4.5
5
5.5
Temperature (°C)
Input Voltage, VIN (v)
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LR18120
CMOS IC
TYPICAL CHARACTERISTICS(Cont.)
Output Voltage vs. Input Voltage
Reference Voltage vs. Input Voltage
0.812
0.808
0.804
0.8
2.55
2.54
2.53
2.52
2.51
2.5
IO=0A
2.49
2.48
2.47
2.46
2.45
0.796
0.792
0.788
3
3.5
4
4.5
5
5.5
3
3.5
4
4.5
5
5.5
Input Voltage, VIN (v)
Input Voltage, VIN (v)
Max. Power Dissipation vs.
PCB Top Copper Area
Max. Power Dissipation vs.TAMB (still air)
3.5
3.5
A=5.0 in2
A=4.5 in2
3
3
A=4.0 in2
A=3.5 in2
A=3.0 in2
2.5
2.5
2
2
1.5
1.5
A=1.0 in2
A=1.5 in2
1
1
A=2.0 in2
A=2.5 in2
A=0.5 in2
0.5
0.5
0
0
0 0.5
Stop
1 1.5 2 2.5 3 3.5 4 4.5 5
PCB Top Copper Area (in2)
25
35
45
55
AMB (°C)
35
75
85
T
Load Transient
Short Circuit Current
Stop
VOUT
IOUT
VIN=3.3V,VOUT=2.5V,IOUT=0 to 2A
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LR18120
CMOS IC
TYPICAL CHARACTERISTICS(Cont.)
VIN Start up Waveform
VPP Start up Waveform
Tek Stop
Stop
VIN
VPP
VOUT
VOUT
VIN
VPP
VEN Start up Waveform
Tek Stop
VEN
VOUT
VPP
VIN
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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